Passing `selectedpoints` as an argument to a plot doesn't update the stored selected data.

Bug

This problem is also described here:
https://github.com/plotly/dash/issues/2301

This is true when constructing the graph with a selectedpoints argument or when restyling the graph with a selectedpoints argument.

I have been digging into the source code to try to figure out a workaround to this, but my limited knowledge of JavaScript is obscuring the solution.

Reproducible Example

Please see this reproducible example below:

library(shiny)


#' Render the mtcars graphs, wt x-axis, mpg y-axis
render_graph <- function() {
  plotly::plot_ly(
    mtcars,
    x = ~ wt,
    y = ~ mpg,
    selected = list(marker = list(color = "red")),
    hoverinfo = "text",
    text = rownames(mtcars),
    type = "scatter",
    mode = "markers",
    source = "graph"
  ) %>%
    plotly::layout(dragmode = "select",
                   clickmode = "event+select")
}


ui <- fluidPage(fluidRow(
  actionButton("action", "Print Selected"),
  plotly::plotlyOutput("graph"),
  DT::DTOutput("table")
))


server <- function(input, output, session) {
  output$table <- DT::renderDT({
    mtcars
  })
  
  output$graph <- plotly::renderPlotly(render_graph())
  
  plot_proxy <- plotly::plotlyProxy("graph")
  table_proxy <- DT::dataTableProxy("table")
  
  observeEvent(input$action, {
    selected <-
      isolate(plotly::event_data("plotly_selected", source = "graph"))
    print(selected)
  })
  
  selected_data <- reactive({
    selected <-
      plotly::event_data("plotly_selected", source = "graph")
    selected <- selected$pointNumber + 1
    
    selected
  })

  observe({
    table_proxy %>% DT::selectRows(selected_data())
  })

  # update the plot based on table
  observeEvent(input$table_cell_clicked, {
    selected_rows <- input$table_rows_selected - 1
    selected_rows <- t(matrix(selected_rows))

    plotly::plotlyProxyInvoke(
      plotly::plotlyProxy("graph", session),
      "restyle",
      list(selectedpoints = selected_rows), # arg needs a row-major matrix
      0  # this number represents the plot trace. No arg updates all traces
    )
  })
}


shinyApp(ui, server)

Comienza ejecutando el ejemplo reproducible de Shiny y sigue las llamadas a plotly::event_data y plotly::plotlyProxyInvoke, especialmente la operación restyle con selectedpoints. Inspecciona la integración de JavaScript utilizada por plotly.R, ya que el informe identifica los conocimientos limitados de JavaScript como un obstáculo. Se considera terminado cuando los selectedpoints proporcionados durante la construcción del gráfico o el restyling se reflejan en los datos seleccionados almacenados.